A total of 57 percent opposed the new rules, including 67 percent of Democrats and 55 percent of independents. Even a plurality of Republicans opposed the rules — 48 percent, compared with 46 percent who expressed support.

Gallup, which has been asking Americans about abortion since 1962 — more than a decade before Roe v. Wade was decided — found that unlike other social issues, for which public opinions have changed over time, abortion views have stayed relatively stable. And the public is equally divided between those who call themselves “pro-choice” (48 percent) and “pro-life” (48 percent).

Still, Gallup found that within those percentages, the public remains muddled, and generally in favor of restrictions, such as how long into a pregnancy an abortion can be performed or the reasons a woman is seeking the abortion. Just under 30 percent said abortion should be legal under any circumstances, while only 18 percent said it should be illegal under any circumstances. Fifty percent say it should be legal “only under certain circumstances.”

Republicans were the only major demographic group with an unfavorable opinion of Planned Parenthood (63 percent) along with those who identify themselves as “pro-life” (59 percent).

But even in those groups more than a third of respondents approved of Planned Parenthood. Large majorities of Democrats, independents, men, women and people of all age groups have a favorable opinion of the organization, despite recent attacks on it by Trump and congressional Republicans.

Gallup said that support has remained relatively consistent since 2015, although margins have grown narrower since the 1990s.

The Kaiser Family Foundation poll was conducted June 11-20 among 1,492 adults. The margin of error is +/-3 percentage points for the full sample.

Gallup’s findings on abortion attitudes are based on its annual Values and Beliefs poll, conducted May 1-10. It has a margin of error of +/-4 percentage points. Its Planned Parenthood poll was done in June and has a margin of error of +/-3 percentage points.